If it should choose to attempt to pressure Obama through the congress, the whole support system for Israel will get blown up. People are already starting to question those congressmen who push hard for Israel, about where their true loyalties reside. Americans won't long abide their elected officials actively lobbying against their government in favor of a foreign power.
Spain investigating ex-IMF chief Rato for fraud (Reuters)
from the article: Obama condemns critics of newly brokered interim nuclear deal with Iran